mesa/compute: drop pointless casts.
mesa/compute: drop pointless casts.

We already are a GLintptr, casting won't help.

Reviewed-by: Alejandro Piñeiro <5dfedca1889afcca58e9b95acd46f78f54f166ed@igalia.com>
Reviewed-by: Anuj Phogat <e2026475996c48f0b97fd37e84129b3912980428@gmail.com>
Signed-off-by: Dave Airlie <f2295d84e358395675bc8031be58672073ae065e@redhat.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler